Pulverizing-machine.



No. 760,474. PATBNTED MAY 24, 1904. F. 0. NICKEL. PULVERIZING MACHINE.

APPLICATION FILED 00127. 1901.

H0 MODEL.

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UNITED STATES Patented May 24, 1904.

PATENT OFFTCE.

FRANK (J. NICKEL, OF DETROIT, MICHIGAN.

PULVERI'ZlNG-MACHINE.

SPECIFICATIONforming part of Letters Patent No. 760,474, dated May 24, 1904.

Application filed October 7, 1901. Serial No. 77,827. (No model.) I

To all 1071,0111, it may concern:

Be it known that I, FRANK O. NICKEL, a citizen of the United States, residing at Detroit, in the county of Wayne, State of Michigan,

have invented certain new and useful Improvements in Ihilverizing-Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and

to the figures of reference marked thereon,

which form a part of this specification.

This invention relates to a grinding and pulverizing machlne especially designed for reducing to powder fibrous materials used by manufacturing chemists and for grinding cement; and it consists 1n the constructlon and arrangement of parts, hereinafter fully set forth, and pointed out particularly in" the receptacle in the throat of the hopper, then broken and gradually reduced to a powder, in which form the material is discharged from the machine through the operation of a rotary fan.

A further object is to provide for the renewal and adjustment of the various parts to compensate for wear, so as to maintain the machine at all times in a condition of high efficiency.

The above objects are attained by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a sectional view through the machine. Fig. 2 is an end elevation thereof. Fig.3 is a plan view. Fig. 4c is an elevation of the interior of the pulverizer, the front of the cylindrical casing being removed. Fig. 5

is a sectional view on line 5 5 of 1. Fig.

6 is an elevation of the innner face of the disk: 'mounted on the hub of one of the spiders carrying the pulverizing knives and boaters and adapted to rotate therewith.

Referring to the characters of reference, 1

designates a cylindrical case upon the top of which, is mounted a receptacle 2, forming within it the throat 30f the hopper, (not shown,) but adapted to be mounted upon the top receptacle 2. Within the throat 3 of the hopper is a reciprocatory tray 4, adapted to receive the material from the hopper and. in turn discharge the material into the chute 5, leading to the ingress-opening 6 in the inner or rear wall 7 of thecase 1.

Mounted in suitable journals is a shaft 8, carrying a pulley 9, which receives a belt 10, leading from any. suitable motive power, whereby said shaft may be rotated. One end of said shaft projects into the case 1 and receives thereon the hub 11, carrying at its opposite ends the radial arms or spiders 12. The hub 11 is keyed to the shaft, as shownat 13 in Fig. 1, and caused to revolve therewith.

Located within thc'case 1 and conforming to the circular wall thereof are the stone segments 14:, of suitable quality for grinding and pulverizing purposes, which form the cylindrical concave of the case and extend transversely thereof, the inner concave faces of said stone segments being provided with transverse channels 15, which produce a roughened surface that adds to the reducing quality of the stone. Crossing transversely between the arms 12 at their outer ends are the grinding and beating knives 16. These knives are provided with loops 17 at their ends, having slots therein which receive the bolts 18, that pass through said slots into said arms to hold'the knives in position, whereby said knivesare made adjustable diametrically to enablie their working edge to be projected into such proximity to the stone as the characteroflthe material requires. AThis adjustment of the knives also enables them to be extended to compensate for any wearingaway of the inner face of the stone.

Upon the inner end 7 of the case is a ring 19, having notches or serrations formed in the inner are thereof. Concentric witlrthc ring 19 is a segment 20, located between-said ring and the shaft 8 and provided with notches or serrations in its outer arc. Upon the inner end of the hub 11 is mounted a disk 21, having projecting from its outer face near its perimeter a series of lugs 22 and from a point near its axis the lugs 23. The lugs 23 are adapted to pass through the circular way 24, formed between the hub 11 and the segment 20, while the lugs 22 are adapted to pass through the way 25, formed between the segment and the ring 19.

The material is discharged from the tray in the throat-hopper into the chute 5 and passes down said chute through the opening 6 in the end 7 of the case. The shaft 8 being rotated causes the disk 21 to revolve and the lugs thereon to travel rapidly through the ways between the ring 19 and the segment 20 and said segment on the hub 11. The material is first encountered by the lugs 23 in the way 24,

- whereby the first break in the material is made,

which is then carried into contact with the lugs 22, whereby it is again broken in the way 25 between the ring 19 and segment 20, after which the material passes into the interior of the case and is encountered by the rapidlyturning knives 16, whereby it is beaten and ground by said knives between their edges and the stone until reduced to a powder of the requisite consistency.

Projecting from the inner face of the disk 21 are the radial fan-blades 26, which are adapted by the rapid rotation of the shaft 8 to cause a sufficient blast of air to carry the powdered material out of the case 1 through the opening 27 in the front 28 of the case (see Figs. 1 and 2) controlled by the slide 29.

From said opening the powdered material passes into a suitable receptacle (not shown) provided with a covering of bolting-cloth or muslin, whereby the powder is retained, while the air is permitted to escape, as will be well understood in the art.

It is designed to run this improved pulverizer at a high rate of speed, so that the material, even though it be of a fibrous nature, is ground and beaten by such a rapid movement as to become readily reduced to powder, the fibrous portion thereof being carried from the pulverizer with the air-current and collected in the bolting-box.

The stone segments 14c are removably located in the case, and when they become worn they may be readily removed and new stones substituted therefor.

To provide a suitable movement to the receptacle 1 in the throat of the hopper, a counter-shaft 30 is employed, driven by a belt 31 from the shaft 8. Upon one end of the shaft is a beveled pinion 32, adapted to mesh with a beveled gear 33 upon the crank-shaft 34:, the crank 35 of which is attached to a reciprocatory rod 36, carrying the receptacle .4, whereby said receptacle is caused to vibrate to gradually feed the material to the machine.

The front 28 of the case is provided with projecting ears 37 apertured to receive the threaded bolts 38, projecting from the body of the case and upon which are screwed the thumb-nuts 39, whereby the front of the case may be readily removed to afford access to the interior of the pulverizer.

- Having thus fully set forth my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a pulverizer, the combination of a suitable case, an opening therein for the reception of the material, said case having a cylindrical concave of grinding-stone, a rotary grinder and pulverizer in the case having opposed radial arms, a first and a second brake for the material interposed between the ingress-opening and said rotary pulverizer, knives carried upon the opposed radial arms of the rotary pulverizer said knives extending between and being adjustable upon said arms diametrically of the case to increase or decrease the distance between their edges and the stone concave, and means for discharging necting the feeding device with said opening, a brake for the material within the case, a

cylindrical concave of grinding-stone forming the inner wall of the case and comprising removable segments, a rotary grinder adapted to revolve within said stone and receive the material from said brake, said rotary grinder carrying adjustable knives which cross the case transversely and serve to pulverize the material and grind it between their edges and the face of the stone, and a fan within the case for blowing powdered material therefrom.

3. In a pulverizer, the combination with the case having an opening therein for the reception of the material, a feeding device communicating with said opening, a ring and a segment mounted on the end of the case concentric therewith, a rotary shaft extending into the case, a disk on said shaft having lugs which project into the ways between said ring and segment and said segment and said shaft, a rotary grinder and pulverizer mounted on said shaft within the case independently of said disk and comprising radial arms, knives carried by and adjustablelongitudinally of said arms, a cylindrical grinding-concave within which said knives revolve, an egress-opening in the case for the powdered material and means for discharging the powdered material therefrom.

1. In a pulverizer, the combination of a case, a cylindrical concave therein, a rotary grinder adapted to revolve within said concave and having radial arms, grinding-knives mounted upon said arms extending transversely of the case, said case having an opening for the reception of the material, a brake in the machine located between said opening and said grinder, a discharge-opening in the case for the powdered material and fan-blades mounted upon the arms of the rotary grinder interposed between said knives and moving therewith, said knives adapted to create an air-blast to force the powdered material from the case. 10

In testimony whereof I sign this specification in the presence of two witnesses.

FRANK C. NICKEL. Witnesses:

E. S. WHEELER, (3. E. JosLIN. 

